Gyro sensor and electronic apparatus
US-9222776-B2 · Dec 29, 2015 · US
MEMS gyroscopes with reduced errors
US9212908B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9212908-B2 |
| Application number | US-201213456706-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 26, 2012 |
| Priority date | Apr 26, 2012 |
| Publication date | Dec 15, 2015 |
| Grant date | Dec 15, 2015 |
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Abstract
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In comb drive vibratory gyroscopes, drive-induced Coriolis accelerometer offset is effectively canceled by demodulating the output during equal times of in-phase and anti-phase drive of the shuttle with respect to the velocity signal used for angular rate demodulation. This reduces or eliminates the corresponding thermal and die-stress effects otherwise needing calibration.
First claim
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What is claimed is: 1. A method of operating vibratory gyroscope having a shuttle and a Coriolis accelerometer, the method comprising: driving, by a first shuttle driver, vibratory motion of the shuttle using a drive signal having alternating phase and anti-phase drive signal periods; and demodulating, by a demodulator, output of the Coriolis accelerometer during equal times of phase and anti-phase drive of the shuttle with respect to a velocity signal used for angular rate de…
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Physics · mapped topic
- G01C19/5719Primary
Physics · mapped topic
Physics · mapped topic
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- What does patent US9212908B2 cover?
- In comb drive vibratory gyroscopes, drive-induced Coriolis accelerometer offset is effectively canceled by demodulating the output during equal times of in-phase and anti-phase drive of the shuttle with respect to the velocity signal used for angular rate demodulation. This reduces or eliminates the corresponding thermal and die-stress effects otherwise needing calibration.
- Who is the assignee on this patent?
- Geen John A, Chang John F, Analog Devices Inc
- What technology area does this patent fall under?
- Primary CPC classification G01C19/5719. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 15 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).